rudder post

VPC

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any new ideas regarding rudder post seals and flanges inside of the hull and attaching to the shoe
 

plowin

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Use one of these, crank the nuts down and use teflon packing and you won't have a drip or a worry. 11%201%20001.jpg

11%201%20001.jpg
 

F/V First Team

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Boom

crop.php


Welcome to the 21st Century

What took you so long?
 

CEShawn

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Plowin that looks like the one I got from Ron Thomas, loved it because I needed one side tweaked a little to fit...

I've wondered why they haven't gone to mechanical yet Travis since its everywhere else in marine applications.
 

plowin

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Thats where this one came from. Nice to not have to worry to much about whats going on in the lazarette.
 

captainlarry84

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Rudder post seals are not like shaft seals. A straight packing glad should do the job. Unlike shaft seal which spin fast and must be maintained a rudder seal hardly move. Three loops of flax packing and make it as tight as you want. In 28 years I am on my third repack.

storm 091.jpg
 

CEShawn

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In relation to rudder posts, do some of you agree that this can be an actual weak spot for a downeasthull.

We all love the keel because it protects the actual running gear right, in a sense. What though if that running gear becomes a danger to the hull itself. The only reason I know about this subject matter is we had a cracked rudder post, then I ended up replacing it with Ron Thomas, what a great guy to talk to on the phone.

So when you are running what is the first piece of hull that would hit during a grounding? It is that very end of the keel that is not supported by the hull under the prop right? We'll that acts like a cantilever and pops your rudder up against the bottom of the hull.

Depending what your rudder post looks like two things can roughly happen. What happened to the boat I was on, that rudder post, the bushing actually extended past the bottom of the hull, so that got punched up and through, the brass plate on the bottom cracked even though we made it through the rest of the year without even noticing it.

So talking to Ron about all of this we talked about the debate of having that rudder post extend past the hull to offer more support and vs. the danger of running aground. I believe we opted to have it flush with the hull. I know there were some other major points that went into that decision but I do not remember them. I think the fact that we may have had a high speed boat in a sense, how that would be our primary impact point, etc.

This sound familiar to anyone, agreements, disagreements?
 

F/V First Team

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Can we talk about corrosion, erosion, isolation, dissimilar metals contact, adhesive failure, thermal loading and stress fractures of slow moving parts and multiple part-point penetrations next?
 

BillD

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crop.php


Welcome to the 21st Century

What took you so long?

What a very fine argument to upgrade from the dinosaur method

And I didn't even have to bring it up :D

In relation to rudder posts, do some of you agree that this can be an actual weak spot for a downeasthull.

We all love the keel because it protects the actual running gear right, in a sense. What though if that running gear becomes a danger to the hull itself. The only reason I know about this subject matter is we had a cracked rudder post, then I ended up replacing it with Ron Thomas, what a great guy to talk to on the phone.

So when you are running what is the first piece of hull that would hit during a grounding? It is that very end of the keel that is not supported by the hull under the prop right? We'll that acts like a cantilever and pops your rudder up against the bottom of the hull.

Depending what your rudder post looks like two things can roughly happen. What happened to the boat I was on, that rudder post, the bushing actually extended past the bottom of the hull, so that got punched up and through, the brass plate on the bottom cracked even though we made it through the rest of the year without even noticing it.

So talking to Ron about all of this we talked about the debate of having that rudder post extend past the hull to offer more support and vs. the danger of running aground. I believe we opted to have it flush with the hull. I know there were some other major points that went into that decision but I do not remember them. I think the fact that we may have had a high speed boat in a sense, how that would be our primary impact point, etc.

This sound familiar to anyone, agreements, disagreements?

Can we talk about corrosion, erosion, isolation, dissimilar metals contact, adhesive failure, thermal loading and stress fractures of slow moving parts and multiple part-point penetrations next?

19th century?,,,,,20th century?,,,,,dinosaurs?........OH MY!

explain???

I understand about metal vs composites.

What piece in the group you posted is a rudder shaft seal ???

Lost??
 
Last edited:

CEShawn

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Travis, you were probably just waiting! I'm glad I could make your day.

So what are some of the prices, comparision if you were going to upgrade your rudder post or what? 10% more, 20%? Thanks...
 
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